Laserfiche WebLink
6/15/99 By: Peter Knaeble, P.E. (Terra Engineering Inc.) <br /> Wirtz Site, Elk River, MN <br /> • <br /> . "Open Space Preservation Development" <br /> (R1a -Residential Clustering) <br /> (OSPD) <br /> Based on 6/9/99 Concept Plan for 27 lots (incl. ex. house) <br /> Acres <br /> Total site 74.7 <br /> SW Pond 5.6 DNR Protected; Type 3/4/5 <br /> Trott Brook 0.9 DNR Protected; assume 30'wide of Type 3/4/5 <br /> SE Wetland 0.0 Not DNR Protected; Non-Type 3/4/5 <br /> So. Wetland 0.0 Not DNR Protected; Non-Type 3/4/5 <br /> Total Type 3/4/5 Wetlands 6.5 <br /> "Eligible Land" 68.2 (excl. Type 3/4/5 Wetlands) <br /> Allowed Zoning District Density 2.5 acres/lot <br /> OSPD Potential Density 27 (c@ 1 ac. min. lot size) <br /> Reqd. Minimum Open Space 34.1 (min. 10 ac.; must include 50% of"Eligible Land" area) <br /> 50% of total site =37.4 <br /> 50% of"Eligible Land"=34.1 <br /> lkosed Concept Plant <br /> No. of lots 27 (incl. ex. house) <br /> Total area of Open Space (ac.) 39.2 % of total site =52.5% <br /> Open Space (Type 3/4/5 Wetlands) 6.5 <br /> Open Space ("Eligible Land") 32.7 % of"Eligible Land"=47.9% <br /> Area for lots and new streets (ac.) 35.5 <br /> Length of new streets (If) 3200 <br /> Residential Clustering (OSPD) Design Standards: <br /> Min. lot size 1.0 ac. (with principal drainfield on-site & <br /> secondary drainfield in open space) <br /> Min. lot size 11,000 sf (with principal &secondary drainfields, or <br /> community drainfields, in open space) <br /> (80' lot width, 100' corner lot width, 130' lot depth) <br /> Front setback 30' <br /> Side setback 10' (5' garage) <br /> Rear setback 20' <br /> • <br />